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US 2023/0415104 A1Published application
Co2 purification with electroactive polymers
OwnerZiyang Huo, Chengtian Shen +2inventors
InventorsZiyang Huo, Chengtian Shen, Yueshen Wu, Lihui Wang
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Abstract
Electroactive polymers having redox activatable moieties pendant from a polymeric backbone, and compositions of the electroactive polymers are disclosed. The polymers are useful in membranes for electrochemical cells, and for facilitation of electrolytically-based carbon dioxide enrichment.
Claims15
An electrochemical method for enrichment of carbon dioxide gas comprising:
- (a) providing an electrolysis cell having a cathode layer, an anode layer and a membrane layer arranged between the cathode layer and the anode layer,
- wherein the membrane layer is composed of at least one polymer comprising moieties of the formula
- or combinations thereof, wherein
- each of R7 and R8 is, independently, an electron-withdrawing moiety, H, optionally substituted aliphatic, optionally substituted alkyl, optionally substituted heteroaliphatic, optionally substituted heteroalkyl, optionally substituted aromatic, optionally substituted aryl, or optionally substituted arylalkylene,
- wherein at least one of R7 or R8 comprises an electron-withdrawing moiety;
- each of R9 and R10 is, independently, H, optionally substituted aliphatic, optionally substituted alkyl, optionally substituted heteroaliphatic, optionally substituted heteroalkyl, optionally substituted aromatic, optionally substituted aryl, or optionally substituted arylalkylene, or wherein R9 and R10 can be taken together to form an optionally substituted cyclic group;
- Ar is an optionally substituted aromatic or optionally substituted arylene;
- n is an integer of 1 or more;
- each of ring a, ring b, and ring c can be independently optionally substituted;
- and
- one or more of R7, R8, R9, and R10 optionally comprises an electroactive moiety, wherein the electroactive moiety is a moiety that reversibly reacts with a Lewis acidic gas;
- (b) passing carbon dioxide gas through the electrolysis cell whereby carbon dioxide is captured by the membrane layer, the membrane layer exposed to an electrical current;
- and then
- (c) releasing enriched carbon dioxide from the membrane layer.
11 more elements
An electrochemical cell comprising:
- an anode;
- a cathode;
- and
- a polymer electrolyte membrane disposed between the anode and the cathode, wherein
- the polymer electrolyte membrane comprises a polymeric composition of at least one polymer, wherein
- the polymer comprises moieties of the formula
- or combinations thereof, wherein
- each of R7 and R8 is independently an electron-withdrawing moiety, H, optionally substituted aliphatic, optionally substituted alkyl, optionally substituted heteroaliphatic, optionally substituted heteroalkyl, optionally substituted aromatic, optionally substituted aryl, or optionally substituted arylalkylene, wherein at least one of R7 or R8 comprises an electron-withdrawing moiety;
- each of R9 and R10 is, independently, H, optionally substituted aliphatic, optionally substituted alkyl, optionally substituted heteroaliphatic, optionally substituted heteroalkyl, optionally substituted aromatic, optionally substituted aryl, or optionally substituted arylalkylene, or wherein R9 and R10 can be taken together to form an optionally substituted cyclic group;
- Ar is an optionally substituted aromatic or optionally substituted arylene;
- n is an integer of 1 or more;
- each of ring a, ring b, and ring c can be independently optionally substituted;
- and
- one or more of R7, R8, R9, and R10 optionally comprises an electroactive moiety, wherein the electroactive moiety is a moiety that reversibly reacts with a Lewis acidic gas.
11 more elements
A polymeric composition comprising:
- at least one polymer comprising moieties of the formula
- or combinations thereof, wherein
- each of R7 and R8 is independently an electron-withdrawing moiety, H, optionally substituted aliphatic, optionally substituted alkyl, optionally substituted heteroaliphatic, optionally substituted heteroalkyl, optionally substituted aromatic, optionally substituted aryl, or optionally substituted arylalkylene,
- wherein at least one of R7 or R8 comprises an electron-withdrawing moiety;
- each of R9 and R10 is, independently, H, optionally substituted aliphatic, optionally substituted alkyl, optionally substituted heteroaliphatic, optionally substituted heteroalkyl, optionally substituted aromatic, optionally substituted aryl, or optionally substituted arylalkylene, or wherein R9 and R10 can be taken together to form an optionally substituted cyclic group;
- Ar is an optionally substituted aromatic or optionally substituted arylene;
- n is an integer of 1 or more;
- each of ring a, ring b, and ring c can be independently optionally substituted;
- and
- one or more of R7, R8, R9, and R10 optionally comprises an electroactive moiety, wherein the electroactive moiety is a moiety that reversibly reacts with a Lewis acidic gas.
7 more elements
Dependencies are inferred from the claim text.